CN108040556A - A kind of vegetable transplanting machine shock mitigation system and shock-dampening method based on STF and ultrasonic wave - Google Patents
A kind of vegetable transplanting machine shock mitigation system and shock-dampening method based on STF and ultrasonic wave Download PDFInfo
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- CN108040556A CN108040556A CN201810058517.4A CN201810058517A CN108040556A CN 108040556 A CN108040556 A CN 108040556A CN 201810058517 A CN201810058517 A CN 201810058517A CN 108040556 A CN108040556 A CN 108040556A
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- 235000013311 vegetables Nutrition 0.000 title claims abstract description 36
- 230000000116 mitigating effect Effects 0.000 title claims abstract description 22
- 230000035939 shock Effects 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 38
- 238000006073 displacement reaction Methods 0.000 claims abstract description 37
- 238000005070 sampling Methods 0.000 claims abstract description 27
- 230000008719 thickening Effects 0.000 claims abstract description 25
- 238000006243 chemical reaction Methods 0.000 claims abstract description 20
- 238000013016 damping Methods 0.000 claims abstract description 16
- 230000000694 effects Effects 0.000 claims abstract description 11
- 230000000644 propagated effect Effects 0.000 claims abstract description 6
- 230000003321 amplification Effects 0.000 claims description 15
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 15
- 239000003990 capacitor Substances 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 5
- 238000004088 simulation Methods 0.000 claims description 4
- 238000007689 inspection Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 230000006378 damage Effects 0.000 description 4
- 230000001133 acceleration Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 239000002202 Polyethylene glycol Substances 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 229920001223 polyethylene glycol Polymers 0.000 description 2
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 208000009205 Tinnitus Diseases 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000035479 physiological effects, processes and functions Effects 0.000 description 1
- 239000011856 silicon-based particle Substances 0.000 description 1
- 231100000886 tinnitus Toxicity 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- 239000002435 venom Substances 0.000 description 1
- 210000001048 venom Anatomy 0.000 description 1
- 231100000611 venom Toxicity 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C11/00—Transplanting machines
- A01C11/006—Other parts or details or planting machines
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- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Prostheses (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
The present invention provides a kind of vegetable transplanting machine shock mitigation system and its shock-dampening method based on STF and ultrasonic wave,The present invention is based on the characteristics of STF and ultrasonic wave,It is propagated using ultrasonic wave in shear thickening liquid and causes the vibration of liquid medium,So that liquid consistency increases,Hardness increases,So as to give piston sufficiently large reaction force,Achieve the effect that damping,Simultaneously,Present invention utilizes displacement sensors,Operational amplifier,Sampling holder,The combination of A/D conversions etc.,Utilize the size of impact force suffered by the change in displacement reaction between damping device upper and lower support plate,So as to voltage signal output,It is changed into corresponding current values of each moment again,It is finally converted to the ultrasonic wave of respective frequencies,Ultrasonic frequency is different,The hard tough degree of shear thickening liquid is also different,Reaction force also can be different,Accurately realize that impact force is corresponded with reaction force.
Description
Technical field
The invention belongs to agricultural machinery technological fields, and in particular to a kind of vegetable transplanting machine based on STF and ultrasonic wave subtracts
Shake system and shock-dampening method.
Background technology
Vibration will necessarily give machinery even operator itself to bring huge harm to mechanical implement for a long time.Due to vibration
Presence, greatly reduce the dynamic accuracy and performance of vegetable transplanting machine, while the vibration of machinery can be generated and become repeatedly
Dynamic load, for a long time, will necessarily reduce vegetable transplanting machine service life in addition it is serious when can cause to be difficult to the calamity made up
Difficult matter event.Worse vibrate the harm brought to the person and environment.Such as long-time contact vibration source can make one to generate and shake
Dynamic disease, aggravates the damage of human organ.And noise pollution caused by vibration is even more very important, gently can then make mechanical behaviour
Author generates of short duration tinnitus phenomenon, and the physiology and psychology given people brings harm, heavy then cause traffic accident, environmental pollution.Cause
This, reduces or remits very urgent with the vibration of radical cure machinery.
Shear thickening liquid is audaciously quoted in present invention innovation（STF）, when being subject to unexpected external force effect using it, Neng Gouyou
Transient liquid becomes the principle of hard objects, so as to reach the effect of good damping.It is on STF damping machines below
The specific manifestation of system.
The content of the invention
The object of the present invention is to provide a kind of vegetable transplanting machine shock mitigation system and shock-dampening method based on STF and ultrasonic wave,
The present invention is based on the characteristics of STF and ultrasonic wave, are propagated using ultrasonic wave in shear thickening liquid and cause shaking for liquid medium
It is dynamic so that liquid consistency increases, hardness increase, so as to give piston sufficiently large reaction force, achievees the effect that damping, to solve
Above-mentioned technical problem.
In order to achieve the above object, used technical solution of the invention is：A kind of vegetables based on STF and ultrasonic wave
Transplanter shock mitigation system, the shock mitigation system are mounted on vegetable transplanting machine and carry out damping, the shock mitigation system bag to vegetable transplanting machine
It includes cylinder body and is arranged on the ultrasonic transducer of cylinder interior, the bottom of the cylinder body is connected with lower supporting plate, in the cylinder body
The piston that can be slided up and down in the cylinder body is provided with, the piston rod of the piston is pierced by rear and upper support out of described cylinder body
Plate is connected, and the upper backup pad is mounted on vegetable transplanting machine, and the inner cavity of the cylinder body is divided into epicoele under by the piston
Chamber, piston rod one end of the piston are arranged on the upper intracavitary, and the piston rod other end of the piston is worn out of described cylinder body
It is connected after going out with upper backup pad, the lower intracavitary is filled with shear thickening liquid, and the lower intracavitary is provided with ultrasonic transducer,
The ultrasonic transducer is mounted on the inner wall of the cylinder base；The upper backup pad is corresponding on the lower supporting plate to be set
The displacement of the upper backup pad can be converted into the displacement sensor of voltage signal by being equipped with, and be provided on the lower supporting plate by position
The operational amplifier that is amplified of voltage signal of displacement sensor output, being provided on the upper backup pad can be by amplified electricity
Pressure signal is converted into the sampling holder of DC signal, is additionally provided with can export sampling holder on the lower supporting plate
DC signal is converted to the supersonic generator of the ac signal to match with ultrasonic transducer.
Preferably, the lower intracavitary is provided with to protect the protection spring of the ultrasonic transducer.
Preferably, the protection spring is mounted on the inner wall of the cylinder base, the protection spring and the ultrasound
The central axis of both wave transducers overlaps.
Preferably, the cylinder body includes the cover for being in the lower cylinder body of column type and being connected with the top of lower cylinder body, under described
The bottom of cylinder body is connected with the lower supporting plate, and the ultrasonic transducer is mounted on the centre bit of the lower cylinder body bottom interior wall
Put place.
Preferably, the cross section of the cover is arc-shaped and the intrados of the cover cross section is towards the lower cylinder body.
Preferably, the center position of the cover offers through hole, and the piston rod of the piston is worn out of described through hole
It is connected after going out with upper backup pad.
Preferably, the operational amplifier is internally provided with operational amplification circuit.
Preferably, the operational amplification circuit is TLC2252 operational amplification circuits.
Preferably, the sampling holder is internally provided with sampling hold circuit, and the sampling hold circuit includes slow
Rush amplifier N1, analog switch S, holding capacitor C and buffer amplifier N2, the inverting input of the buffer amplifier N1
It is connected with its output terminal, the in-phase input end of the buffer amplifier N1 is connected with the output terminal of the operational amplification circuit, institute
The output terminal for stating buffer amplifier N1 is connected by analog switch S with the in-phase input end of buffer amplifier N2, and the buffering is put
The inverting input of big device N2 is connected with its output terminal, and the output terminal of the buffer amplifier N2 is connected with ultrasonic transducer,
The in-phase input end of the buffer amplifier N2 is connected by holding capacitor C with zero potential point.
A kind of shock-dampening method of the vegetable transplanting machine shock mitigation system based on STF and ultrasonic wave, comprises the following steps,
Step 1：Vegetable transplanting machine vibrates after being impacted, and upper backup pad and piston are with vegetable transplanting machine vibration, upper support
Displacement sensor is correspondingly arranged on plate and lower supporting plate, displacement sensor is detected the displacement of upper backup pad, and will inspection
The displacement signal measured is converted into voltage signal；
Step 2：Displacement sensor sends the voltage signal of output to operational amplifier, and operational amplifier is by displacement sensor
The voltage signal of output is amplified；
Step 3：Operational amplifier sends amplified voltage signal to sampling holder, after sampling holder obtains amplification
Voltage signal in every flashy average voltage, then carry out A/D conversions again, and the simulation formed after A/D is converted
Voltage signal is converted into DC signal；
Step 4：Sampling holder sends DC signal to supersonic generator, and supersonic generator is by DC signal
It is converted into the ac signal to match with ultrasonic transducer；
Step 5：Supersonic generator sends ac signal to ultrasonic transducer, and ultrasonic transducer is receiving friendship
It starts to work after galvanic electricity signal and output ultrasonic wave, ultrasonic wave is propagated in shear thickening liquid so that shear thickening liquid
Denseness increases, and hardness increase so as to apply a upward reaction force to the piston moved downward, achievees the effect that damping.
Compared with prior art, the beneficial effects of the invention are as follows：
1. for shear thickening liquid as damping beaer, being impacted using shear thickening liquid becomes rapidly strong in the present invention
It is tough, impact force disappearance and at once restorable characteristic so that shock mitigation system is subject to different impact forces corresponding to give
Reaction force, reaction force can make corresponding adjustment with the variation of the impact force of vibration, so that damping effect
It can be more preferable；
2. shear thickening liquid is made of polyethylene glycol and silicon particle in the present invention, polyethylene glycol is a kind of widely used nothing
Venom body, the temperature range that can be born are very wide.The mechanical friction of conventional apparatus is not only avoided using this new material, is reduced
Noise pollution is extended service life, and larger reaction force can be generated with the liquid medium of smaller size smaller, is reduced
The volume and quality of device so that damping device is more environment friendly and pollution-free；
3. the present invention controls voltage with displacement sensor, conventional apparatus is changed in a manner of changing resistance control electric current, is avoided
The manual regulation and control of potentiometer, realize intelligent automatic regulation and control in conventional apparatus, and simplify mechanical device, and dimension easy to produce
It repaiies；
4. present invention utilizes the combination of displacement sensor, operational amplifier, sampling holder, A/D conversions etc., using subtracting
The size of impact force suffered by the change in displacement reaction between device upper and lower support plate is shaken, so as to voltage signal output, then is changed
For corresponding current values of each moment, the ultrasonic wave of respective frequencies is finally converted to, ultrasonic frequency is different, shear thickening liquid
The hard tough degree of body is also different, and reaction force also can be different, accurately realizes that impact force is corresponded with reaction force.
Description of the drawings
Fig. 1 is the overall structure diagram of the present invention；
Fig. 2 is the schematic cross-sectional view of the present invention；
Fig. 3 is the structure diagram of cylinder body in the present invention；
Fig. 4 is the structure diagram of ultrasonic transducer in the present invention；
Fig. 5 is the structure diagram that spring is protected in the present invention；
Fig. 6 is the structure diagram of sampling hold circuit in the present invention；
Fig. 7 is the structure diagram of operational amplification circuit in the present invention；
It is marked in figure：1st, displacement sensor, 2, upper backup pad, 3, sampling holder, 4, operational amplifier, 5, lower supporting plate, 6,
Supersonic generator, 7, cylinder body, 8, cover, 9, piston, 10, ultrasonic transducer, 11, protection spring, 12, epicoele, 13, under
Chamber, 14, lower cylinder body.
Specific embodiment
The shear thickening liquid used in the present invention（Shear Thickening Fluid）(STF) freely left floating in
Many special particles, when liquid is disturbed because of severe impact, special particle therein mutually collides, shear thickening liquid
Will retrogradation, hardness gradually enhances, and forms the resistance to this agitation.When the impact force suffered by liquid disappears, liquid
Know from experience rapid restore to the original state.Ultrasonic wave can make the particle oscillation in elastic fluid when being propagated by elastic fluid, and pass through medium
Transfer energy by the direction of propagation of ultrasonic wave, acceleration and the ultrasonic frequency of particle vibration it is square directly proportional.Based on this
The characteristic of shear thickening liquid and ultrasonic wave is propagated in shear thickening liquid using ultrasonic wave and causes shaking for liquid medium
It is dynamic so that liquid consistency increases, and hardness increase so as to give piston sufficiently large reaction force, achievees the effect that damping, ties below
Attached drawing is closed technical scheme is described in detail：
As depicted in figs. 1 and 2, a kind of vegetable transplanting machine shock mitigation system based on STF and ultrasonic wave, the shock mitigation system are mounted on vegetable
Damping is carried out on dish transplanter to vegetable transplanting machine, which includes cylinder body 7 and be arranged on the ultrasonic waves of cylinder interior
Energy device 10, the bottom of the cylinder body 7 are connected with lower supporting plate 5, and being provided in the cylinder body 7 can slide up and down in the cylinder body
Piston 9, the piston rod of the piston 9 is connected after being pierced by out of described cylinder body 7 with upper backup pad 2, and the upper backup pad 2 is installed
On vegetable transplanting machine, the inner cavity of the cylinder body 7 is divided into epicoele 12 and cavity of resorption 13, the piston of the piston 9 by the piston 9
Bar one end is arranged in the epicoele 12, and the piston rod other end of the piston 9 is pierced by rear and upper backup pad out of described cylinder body 7
2 are connected, and shear thickening liquid is filled in the cavity of resorption 13, and ultrasonic transducer 10 is provided in the cavity of resorption 13, described super
Acoustic wave transducer 10 is mounted on the inner wall of 7 bottom of cylinder body；The upper backup pad 2 is corresponding on the lower supporting plate 5 to be set
The displacement of the upper backup pad 2 can be converted into the displacement sensor 1 of voltage signal by being equipped with, and be set on the lower supporting plate 5
There is the operational amplifier 4 that the voltage signal for exporting displacement sensor 1 is amplified, being provided on the upper backup pad 2 can incite somebody to action
Amplified voltage signal is converted into the sampling holder 3 of DC signal, and being additionally provided on the lower supporting plate 5 can will sample
The DC signal of retainer output is converted to the supersonic generator of the ac signal to match with ultrasonic transducer 10
6。
Further optimize this programme, be provided with to protect the protection bullet of the ultrasonic transducer 10 in the cavity of resorption 13
Spring 11.
Further optimize this programme, the protection spring 11 is mounted on the inner wall of 7 bottom of cylinder body, the protection bullet
Spring 11 is overlapped with the central axis of both ultrasonic transducers 10.
Further optimize this programme, as shown in figure 3, the cylinder body 7 include in column type lower cylinder body 14 and with lower cylinder body 14
The cover 8 that is connected of top, the bottom of the lower cylinder body 14 is connected with the lower supporting plate 5, the ultrasonic transducer 10
Mounted on the center position of 14 bottom interior wall of lower cylinder body.
Further optimize this programme, the cross section of the cover 8 is arc-shaped and the intrados direction of 8 cross section of cover
The lower cylinder body 14.
Further optimize this programme, the center position of the cover 8 offers through hole, the piston rod of the piston 9 from
It is connected after being pierced by the through hole with upper backup pad 2.
Further optimize this programme, the operational amplifier 4 is internally provided with operational amplification circuit, the operation amplifier
Circuit is TLC2252 operational amplification circuits；As shown in fig. 7, operational amplification circuit herein is electric over the ground including triode T, base stage
Pressure, collector voltage-to-ground, first resistor, second resistanceAnd input voltage Ui, input voltage Ui
Both ends be sequentially connected in series first resistor, the base stage of triode T, the emitter of triode T and base stage voltage-to-groundIt is connected；The collector of triode T successively with second resistance, collector voltage-to-groundBe connected rear and triode T
Emitter be connected, wherein, input voltage Ui is the voltage signal of displacement sensor output, the emitter of triode T and zero electric
Gesture point is connected, and the electrical potential difference between the collector and emitter of triode T is output voltage。
Further optimize this programme, the sampling holder 3 is internally provided with sampling hold circuit, as shown in fig. 6, institute
Stating sampling hold circuit includes buffer amplifier N1, analog switch S, holding capacitor C and buffer amplifier N2, the buffering
The inverting input of amplifier N1 is connected with its output terminal, in-phase input end and the operation amplifier of the buffer amplifier N1
The output terminal of circuit is connected, and the output terminal of the buffer amplifier N1 passes through the same mutually defeated of analog switch S and buffer amplifier N2
Enter end to be connected, the inverting input of the buffer amplifier N2 is connected with its output terminal, the output terminal of the buffer amplifier N2
It is connected with ultrasonic transducer, the in-phase input end of the buffer amplifier N2 is connected by holding capacitor C with zero potential point.
A kind of shock-dampening method of the vegetable transplanting machine shock mitigation system based on STF and ultrasonic wave, comprises the following steps,
Step 1：Vegetable transplanting machine vibrates after being impacted, and upper backup pad and piston are with vegetable transplanting machine vibration, upper support
Displacement sensor is correspondingly arranged on plate and lower supporting plate, displacement sensor is detected the displacement of upper backup pad, and will inspection
The displacement signal measured is converted into voltage signal；
Step 2：Because the voltage signal of displacement sensor output is very faint, therefore displacement sensor passes the voltage signal of output
Operational amplifier is given, the voltage signal that displacement sensor exports is amplified by operational amplifier；By the weak voltage of input
Signal is amplified to required range value and consistent with original input signal changing rule；
Step 3：Operational amplifier sends amplified voltage signal to sampling holder, after sampling holder obtains amplification
Voltage signal in every flashy average voltage, then carry out A/D conversions again, and the simulation formed after A/D is converted
Voltage signal is converted into DC signal；
Step 4：Sampling holder sends DC signal to supersonic generator, and supersonic generator is by DC signal
It is converted into the ac signal to match with ultrasonic transducer；
Step 5：Supersonic generator sends ac signal to ultrasonic transducer, and ultrasonic transducer is receiving friendship
It starts to work after galvanic electricity signal, changes the electrical power of input into mechanical output（That is ultrasonic wave）, ultrasonic wave is in shear thickening liquid
Middle propagation so that shear thickening liquid denseness increases, and causes the vibration of liquid medium, hardness increase, so as to give what is moved downward
Piston applies a upward reaction force, achievees the effect that damping；Herein it should be noted that ultrasonic transducer receives
The ac signal exported at different moments current value it is different, so as to send the ultrasonic wave of different frequency, shear thickening liquid
Denseness and hardness also can ceaselessly change, give different size of reaction force to adapt to different degrees of vibration, so subtract
Shake effect can greatly improve；Herein it should be noted that in liquid particle vibrate acceleration and ultrasonic frequency square into
The displacement that direct ratio, i.e. displacement sensor detect is bigger, then electric current is bigger, and the ultrasonic frequency that ultrasonic transducer is sent is got over
Height, the acceleration that particle vibrates in liquid is bigger, and the denseness and hardness of shear thickening liquid are higher, so as to which shear thickening liquid is given
The reaction force that piston applies is also bigger, and damping effect is also better.
The foregoing description of the disclosed embodiments enables professional and technical personnel in the field to realize or use the present invention.
A variety of modifications of these embodiments will be apparent for those skilled in the art, it is as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and the principles and novel features disclosed herein phase one
The most wide scope caused.
Claims (10)
1. a kind of vegetable transplanting machine shock mitigation system based on STF and ultrasonic wave, which is mounted on right on vegetable transplanting machine
Vegetable transplanting machine carries out damping, which includes cylinder body and be arranged on the ultrasonic transducer of cylinder interior, and feature exists
In：The bottom of the cylinder body is connected with lower supporting plate, and the piston that can be slided up and down in the cylinder body is provided in the cylinder body,
The piston rod of the piston is connected after being pierced by out of described cylinder body with upper backup pad, and the upper backup pad is mounted on vegetable transplanting machine
On, the inner cavity of the cylinder body is divided into epicoele and cavity of resorption by the piston, and piston rod one end of the piston is arranged on described
Intracavitary, the piston rod other end of the piston is pierced by out of described cylinder body to be connected afterwards with upper backup pad, and the lower intracavitary is filled with
Shear thickening liquid, the lower intracavitary are provided with ultrasonic transducer, and the ultrasonic transducer is mounted on the cylinder base
Inner wall on；The upper backup pad is with being correspondingly arranged on the lower supporting plate and can the displacement of the upper backup pad be converted into electricity
The displacement sensor of signal is pressed, the fortune for being amplified the voltage signal of displacement sensor output is provided on the lower supporting plate
Amplifier is calculated, the sampling holding that amplified voltage signal can be converted into DC signal is provided on the upper backup pad
Device, being additionally provided on the lower supporting plate can be converted to the DC signal that sampling holder exports and ultrasonic transducer phase
The supersonic generator of matched ac signal.
2. a kind of vegetable transplanting machine shock mitigation system based on STF and ultrasonic wave according to claim 1, it is characterised in that：
The lower intracavitary is provided with to protect the protection spring of the ultrasonic transducer.
3. a kind of vegetable transplanting machine shock mitigation system based on STF and ultrasonic wave according to claim 2, it is characterised in that：
The protection spring is mounted on the inner wall of the cylinder base, in protection both the spring and the ultrasonic transducer
Mandrel line overlaps.
4. a kind of vegetable transplanting machine shock mitigation system based on STF and ultrasonic wave according to claim 1, it is characterised in that：
The cylinder body includes the lower cylinder body and the cover that is connected with the top of lower cylinder body in column type, the bottom of the lower cylinder body with it is described
Lower supporting plate is connected, and the ultrasonic transducer is mounted on the center position of the lower cylinder body bottom interior wall.
5. a kind of vegetable transplanting machine shock mitigation system based on STF and ultrasonic wave according to claim 4, it is characterised in that：
The cross section of the cover is arc-shaped and the intrados of the cover cross section is towards the lower cylinder body.
6. a kind of vegetable transplanting machine shock mitigation system based on STF and ultrasonic wave according to claim 5, it is characterised in that：
The center position of the cover offers through hole, and the piston rod of the piston 9 is pierced by rear and upper backup pad out of described through hole
It is connected.
7. a kind of vegetable transplanting machine shock mitigation system based on STF and ultrasonic wave according to claim 1, it is characterised in that：
The operational amplifier is internally provided with operational amplification circuit.
8. a kind of vegetable transplanting machine shock mitigation system based on STF and ultrasonic wave according to claim 7, it is characterised in that：
The operational amplification circuit is TLC2252 operational amplification circuits.
9. a kind of vegetable transplanting machine shock mitigation system based on STF and ultrasonic wave according to claim 1, it is characterised in that：
The sampling holder is internally provided with sampling hold circuit, and the sampling hold circuit includes buffer amplifier N1, simulation
Switch S, holding capacitor C and buffer amplifier N2, the inverting input of the buffer amplifier N1 are connected with its output terminal,
The in-phase input end of the buffer amplifier N1 is connected with the output terminal of the operational amplification circuit, the buffer amplifier N1's
Output terminal is connected by analog switch S with the in-phase input end of buffer amplifier N2, the anti-phase input of the buffer amplifier N2
End is connected with its output terminal, and the output terminal of the buffer amplifier N2 is connected with ultrasonic transducer, the buffer amplifier N2
In-phase input end be connected by holding capacitor C with zero potential point.
10. a kind of shock-dampening method of vegetable transplanting machine shock mitigation system based on STF and ultrasonic wave according to claim 1,
It is characterised in that it includes following steps,
Step 1：Vegetable transplanting machine vibrates after being impacted, and upper backup pad and piston are with vegetable transplanting machine vibration, upper support
Displacement sensor is correspondingly arranged on plate and lower supporting plate, displacement sensor is detected the displacement of upper backup pad, and will inspection
The displacement signal measured is converted into voltage signal；
Step 2：Displacement sensor sends the voltage signal of output to operational amplifier, and operational amplifier is by displacement sensor
The voltage signal of output is amplified；
Step 3：Operational amplifier sends amplified voltage signal to sampling holder, after sampling holder obtains amplification
Voltage signal in every flashy average voltage, then carry out A/D conversions again, and the simulation formed after A/D is converted
Voltage signal is converted into DC signal；
Step 4：Sampling holder sends DC signal to supersonic generator, and supersonic generator is by DC signal
It is converted into the ac signal to match with ultrasonic transducer；
Step 5：Supersonic generator sends ac signal to ultrasonic transducer, and ultrasonic transducer is receiving friendship
It starts to work after galvanic electricity signal and output ultrasonic wave, ultrasonic wave is propagated in shear thickening liquid so that shear thickening liquid
Denseness increases, and hardness increase so as to apply a upward reaction force to the piston moved downward, achievees the effect that damping.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810058517.4A CN108040556B (en) | 2018-01-22 | 2018-01-22 | Vegetable transplanting machine damping system and damping method based on STF and ultrasonic waves |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810058517.4A CN108040556B (en) | 2018-01-22 | 2018-01-22 | Vegetable transplanting machine damping system and damping method based on STF and ultrasonic waves |
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| CN108040556B CN108040556B (en) | 2024-01-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113243814A (en) * | 2021-06-02 | 2021-08-13 | 日照职业技术学院 | Hardness-adjustable flexible collodion scrubbing device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006121411A1 (en) * | 2005-05-13 | 2006-11-16 | Protectron Nanocomposites Pte Ltd | Improved colloidal gel for protective fabric, improved protective fabric and method of producing both |
| CN103422341A (en) * | 2012-05-15 | 2013-12-04 | 常熟宝盾高性能纤维材料制品有限公司 | Preparation method of shear thickening fluid |
| CN208001508U (en) * | 2018-01-22 | 2018-10-26 | 河南科技大学 | A kind of vegetable transplanting machine shock mitigation system |
-
2018
- 2018-01-22 CN CN201810058517.4A patent/CN108040556B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006121411A1 (en) * | 2005-05-13 | 2006-11-16 | Protectron Nanocomposites Pte Ltd | Improved colloidal gel for protective fabric, improved protective fabric and method of producing both |
| CN103422341A (en) * | 2012-05-15 | 2013-12-04 | 常熟宝盾高性能纤维材料制品有限公司 | Preparation method of shear thickening fluid |
| CN208001508U (en) * | 2018-01-22 | 2018-10-26 | 河南科技大学 | A kind of vegetable transplanting machine shock mitigation system |
Non-Patent Citations (1)
| Title |
|---|
| 周鸿;闫立勋;陈潜;曹赛赛;宣守虎;龚兴龙;: "剪切增稠液阻尼器隔冲性能的实验研究", 实验力学, no. 06 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113243814A (en) * | 2021-06-02 | 2021-08-13 | 日照职业技术学院 | Hardness-adjustable flexible collodion scrubbing device |
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